Tilted HMD Displays for Wide Temporal Field of View
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Solution Overview
Problem
Conventional head-mounted display devices have a limited field of view, particularly in the temporal area, which restricts the user's perception of virtual reality and decreases the immersiveness of the experience.
Innovation Solution
The use of a tilted configuration for display devices and lenses, where one set of displays and lenses is positioned to direct light towards one eye and another set towards the other eye, with each set being distinct and separate, and not parallel to the first, to increase the field of view in the temporal area while maintaining a compact and lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional parallel display and lens configurations are used, then the device structure is simple, but the field of view is limited
Solution Approach 1:
The patent applies asymmetry by configuring the second display and second lens at a tilt angle relative to the first display and first lens. Specifically, the second display is tilted at an angle between 5-30 degrees, and the second lens is tilted at an angle between 10-40 degrees, creating an asymmetric optical path that expands the temporal field of view while maintaining device compactness
Solution Approach 2:
The patent transitions from a conventional parallel two-dimensional arrangement to a three-dimensional tilted configuration. By introducing angular relationships between the optical components, the system expands the field of view in the temporal direction without increasing the overall device footprint, effectively utilizing the third spatial dimension
2Area of stationary object
If the field of view is increased, then virtual reality immersiveness is improved, but the device size and weight increase
Solution Approach 1:
By tilting the second display and second lens at specific angles, the patent expands the field of view in the temporal direction without increasing the device's overall volume or mass. This angular configuration allows light to traverse a more efficient optical path that covers a wider area while maintaining a compact form factor suitable for head-mounted displays
3Area of stationary object
If the field of view is increased, then virtual reality immersiveness is improved, but the device volume increases
Solution Approach 1:
The asymmetric tilted configuration allows the optical components to be arranged more efficiently in three-dimensional space. The tilt angles create an optimized light path that expands the field of view without requiring additional device volume, as the components overlap in space rather than being arranged in a linear fashion
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the field of view in the temporal area, improving the immersiveness of virtual reality experiences without increasing the size or weight of the display device, and allows for additional space for optional components.
Implementation Method 1
a first set of one or more lenses configured to transmit light from the first set of one or more display elements toward a first eye of a user
Data Source
AI summary
A head-mounted display device includes a first set of one or more display elements defining a first plane and a second set of one or more display elements defining a second plane that is not parallel to the first plane. The display device also includes a first set of one or more lenses defining a third plane and configured to transmit light from the first set of one or more display elements toward a first eye of a user, and a second set of one or more lenses defining a fourth that is not parallel to the third plane, and configured to transmit light from the second set of one or more display elements toward a second eye of the user. The second set of one or more lenses is distinct and separate from the first set of one or more lenses.